Fix favicon not showing (#4311)
Fix favicon not showing (#4311)


Microsoft/pxt,switch-education/pxt,Microsoft/pxt,switch-education/pxt,switchinnovations/pxt,switch-education/pxt,Microsoft/pxt,switchinnovations/pxt,switchinnovations/pxt,playi/pxt,playi/pxt,playi/pxt,Microsoft/pxt,switch-education/pxt,playi/pxt,switch-education/pxt,switchinnovations/pxt,Microsoft/pxt